/* Native-dependent code for NetBSD.
- Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2006-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
-#include <sys/param.h>
-
#include "nbsd-nat.h"
-/* Return a the name of file that can be opened to get the symbols for
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <sys/sysctl.h>
+
+/* Return the name of a file that can be opened to get the symbols for
the child process identified by PID. */
char *
-nbsd_pid_to_exec_file (int pid)
+nbsd_nat_target::pid_to_exec_file (int pid)
{
- size_t len = MAXPATHLEN;
- char *buf = xcalloc (len, sizeof (char));
- char *path;
-
- path = xstrprintf ("/proc/%d/exe", pid);
- if (readlink (path, buf, MAXPATHLEN) == -1)
- {
- xfree (buf);
- buf = NULL;
- }
-
- xfree (path);
+ static char buf[PATH_MAX];
+ size_t buflen;
+ int mib[4] = {CTL_KERN, KERN_PROC_ARGS, pid, KERN_PROC_PATHNAME};
+ buflen = sizeof (buf);
+ if (sysctl (mib, ARRAY_SIZE (mib), buf, &buflen, NULL, 0))
+ return NULL;
return buf;
}